OvisLink Dual Ear Call Center Headset for Allworx IP Phones, Over-the-Head design, Noise Cancellation Corded Dual Ear Noise-Canceling Call Center Headset with Built-in Acoustic Shock Protection, to prevent electric overload Compatible with Allworx 9112 & 9102, 9224, 9212, 9212L, 9202, 9202E, 9204 & 9204G Phones with RF-Shield, Durability, Soft, two earpieces with leatherette cushion, Rotatable, flexible microphone boom, adjustable headband Comes with RJ9 and 2.5mm Quick Disconnect cords to connect the headset with Allworx phone headset jack. No need additional adapter. Light weight, durable and comfort for all-days 2 Years Manufacture Warranty Included!